Canon
EOS R6 Mark III
Hybrid 32.5MP full-frame RF body with 7K RAW video, 40fps electronic burst, 8.5-stop IBIS, and Dual Pixel CMOS AF II.
$2,799
Released Nov 2025
DJI
Osmo Action 3
Rugged 1/1.7-inch action camera with 4K 120p, dual touchscreens, RockSteady stabilization, and 16m waterproofing without a case.
$329
Released Sep 2022
EOS R6 Mark III is 3.2 years newer.
Wins
EOS R6 Mark III
Wins
Osmo Action 3
3 categories tied
Check current prices
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TL;DR — Key differences
- AEOS R6 Mark III has higher AF points / zones (1053 vs 0)
- AEOS R6 Mark III has higher Max video bit rate (2600 Mbps vs 200 Mbps)
- AEOS R6 Mark III has higher ISO max (native) (64,000 vs 12,800)
- BOsmo Action 3 has lower Weight (145 g vs 699 g)
- AEOS R6 Mark III has higher Resolution (32.5 MP vs 12 MP)
Key specs at a glance
Size and weight, to scale
EOS R6 Mark III
138 × 98 × 88 mm
699 g (1.54 lb / 24.66 oz)
Osmo Action 3
71 × 44 × 33 mm
145 g (0.32 lb / 5.11 oz)
EOS R6 Mark III is 68mm wider, 54mm taller, and 56mm thicker than Osmo Action 3.
EOS R6 Mark III is 554 g heavier than Osmo Action 3.
Depth (front-to-back): 88mm EOS R6 Mark III · 33mm Osmo Action 3
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R6 Mark III
138 × 98 mm
Osmo Action 3
71 × 44 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS R6 Mark III
138 × 88 mm
Osmo Action 3
71 × 33 mm
Sensor size, to scale
EOS R6 Mark III
35.9 × 23.9 mm · Full Frame
858 mm² area
Lens ecosystem
Native lens selection
EOS R6 Mark III
✓ more lensesCanon RF
105+
native lenses available
Osmo Action 3: mount data unavailable
Counts include current first-party and major third-party native autofocus lenses.
Use-case scoring
Which one for what?
Algorithmic scores from verified specs · 10 = best in class
Why pick one over the other
Reasons to choose
EOS R6 Mark III
AF points / zones
1053 vs 0 — higher is better
Subject recognition
Adds People, Dogs, Cats…
Dimensions (W×H×D mm)
Adds 138.4, 98.4, 88.4
Card types
Adds CFexpress Type B, SD UHS-II
Max video bit rate
2600 Mbps vs 200 Mbps — higher is better
ISO max (native)
64,000 vs 12,800 — higher is better
Codecs
Adds CRM, XF-HEVC S, XF-AVC S…
Resolution
32.5 MP vs 12 MP — higher is better
Reasons to choose
Osmo Action 3
Dimensions (W×H×D mm)
Adds 70.5, 44.2, 32.8
Card types
Adds microSD
Weight
145 g vs 699 g — lower is better
Codecs
Adds HEVC
Both cameras share
- ✓ISO min (native) — Both 100
- ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
- ✓4K max frame rate — Both 120 fps
- ✓Weather sealing — Both support weather sealing
- ✓Battery life (CIPA) — Both 640 shots
- ✓Touchscreen — Both support touchscreen
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS R6 Mark III
Pros
- ✓32.5MP full-frame sensor
- ✓7K RAW video & 4K 120p
- ✓40fps electronic burst with Pre-Continuous
- ✓8.5-stop IBIS
Cons
- –Single CFexpress Type B + SD slot
- –Smaller LCD than R5 II
- –LP-E6P required for full features
Osmo Action 3
Pros
- ✓4K 120p
- ✓Dual touchscreens
- ✓16m waterproof without case
- ✓RockSteady and HorizonSteady
Cons
- –Older than Action 4/5 Pro
- –Small action-cam sensor
- –Fixed ultra-wide lens
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for portraits, EOS R6 Mark III or Osmo Action 3?
EOS R6 Mark III scores 8.0/10 versus 1.0/10 for Osmo Action 3 — 32.5MP — ample resolution for portraits.
What's the resolution difference between the EOS R6 Mark III and Osmo Action 3?
EOS R6 Mark III is 32.5 MP and Osmo Action 3 is 12 MP, so the EOS R6 Mark III captures more detail for cropping and large prints.
Do the EOS R6 Mark III and Osmo Action 3 have in-body image stabilization?
EOS R6 Mark III has 8.5-stop in-body image stabilization, while osmo Action 3 does not have IBIS.
Which shoots faster bursts — the EOS R6 Mark III or the Osmo Action 3?
EOS R6 Mark III reaches 40 fps electronic. Osmo Action 3 reaches 15 fps electronic.
What's the weight difference between the EOS R6 Mark III and Osmo Action 3?
EOS R6 Mark III weighs 699 g and Osmo Action 3 weighs 145 g, so the Osmo Action 3 is 554 g lighter.
Do the EOS R6 Mark III and Osmo Action 3 record 4K video?
EOS R6 Mark III: 4K up to 120p. Osmo Action 3: 4K up to 120p.
Are the EOS R6 Mark III and Osmo Action 3 weather sealed?
EOS R6 Mark III: Yes. Osmo Action 3: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the EOS R6 Mark III and 640 shots for the Osmo Action 3, giving the Osmo Action 3 the edge.
How much does each cost?
EOS R6 Mark III launched at $2,799 and Osmo Action 3 at $329. The Osmo Action 3 is $2,470 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Canon and DJI press materials.